Saw-guide.



L. A. KAHRS.

SAW GUIDE.

APPLICATION FILED DEG;10.1913.

1,1 1 1,904, Patented Sept. 29, 1914.

i li i miwlil INVENTOR, WITN g Leander f7. Kahrs UNITED STATESPATENTOFFICE.

LEANDER A. KAI-IRS, or HnALnsnUnG, CALIFORNIA, nssienonor ONE-THIRD TOCHARLES W. TUCKER, or I-IEALDSBURG, CALIFORNIA.

SAW-GUIDE.

Specification of Letters iatentr Patented Sept, 29, 1914:.

Application filed December 10, 1913. Serial No. 805,743.

To all whom it may concern:

citizen of the United States, residing at Healdsburg, in the county ofSonoma and State of California, have invented new and usefulImprovements in Saw-Guides, of which the following is a specification.

The object of the present invention is to provide a cheap and simpledevice which will guide a saw at any desired angle to material being cutthereby, and which, while holding the saw accurately in a verticalplane, will be convenient in use.

In the accompanying'drawing, Figure 1 is a plan view of my improved sawguide; Fig. 2 is a broken side view thereof; Fig. 3 is a section on theline 33 of Fig. 1.

Referring to the drawing, 1 indicates a plate, adapted to rest upon thematerial being cut and bent at right angles along a long straight linetherein to form a vertical flange 2, adapted to abut against averticalside of said material. Near one end of said plate is removably pivoted,thereto,by a pivot 3, a flat base 4 of a hard metal, as steel, along astraight edge of which base. is secured thereto by any suitable means anedge of avertical guide plate 6 of a practically non-magnetic metal, asaluminum or brass. The base'4 has, on the side remote from saidplate 6,asemi-circular edge 7 having the pivot 3 as center, and marked withindicating lines 8 and characters 9, and the rear edge of the plate 1,where it passes beneath the base 4, is at the same distance from thevertical flange 2 as is the pivot 3, and thus serves as an indicator, toindicate by its position opposite to the respective indicating marks onthe margin of the base, the angle at which the saw guide is being set.Adjacent to and concentric with the semi-circular edge 7 is asemi-circular slot 11 in the base 4, through which extends upwardly ascrew 12, firmly secured in the plate 1, and on which, above the base 4,is screwed a milled nut 13. By means of this milled nut and screw, theplate 1 can be clamped at any desired angle with the straight edge ofthe guide plate 6. By this device when the plate 1 is set upon a board,block or other article to be sawed, with the flange 2 abutting against avertical side thereof, then, while the plate is rigid in this position,the base 4 can be turned through any desired angle and secured at wasnot possible,

surface of the latter.

"said' angle, thus moving the guide plate 6 open to the objection thatit was a matter of H some difficulty and caused some loss of time toplace the saw in such device and in the proper position for making thecut. Such devices have all heretofore had guiding means engaging bothsides of the saw, and necessarily been connected with each other at thetop. They have therefore necessitated that the saw should be insertedtherein either from below or at the near end, and it with such. holdingdevice, to place the saw in position by moving it sidewise into contactwith the device. In my invention I have avoided this objection bysecuring to the guide plate on its side other than that at which the sawout is to be made, a horse-shoe magnet, preferably a permanent magnet15, of which the poles 16 extend through recesses 17 in the guide plateand are flush with the surface of the guide plate against which the sawmoves. The magnet may be secured in any suitable manner, as by screws 14throughthe guide plate. The saw guide having been placed in position thecutting blade of the saw is placed upon the board, block, or otherdevice to be cut, closely adjacent to the lower edge of the guide plate.The saw is then moved intoa vertical plane, so that it is in closecontact with the guide plate along the whole The saw bein of steelcompletes the magnetic circuit of the magnet 15, which was interruptedby the guide plate of aluminum, brass or other nonmagnetic material andthe saw is very firmly held ina vertical plane. At the same time themagnet offers no resistance to the longitudinal movement of the saw.

It will thus be seen that this device possesses the great advantage ofholding the saw in a vertical plane when cutting whileit permits the sawto be placed rapidly in position and removed thereforin by moving itsidewise up to, guide.

I claim j p In a saw guide, the combination of a plate and away from,the saw for resting upon the material to be cut and In testimony whereofI have hereunto set having a straight portion for positioning my hand inthe presence of two subscribing 10 the plate upon the material, a basepivotally Witnesses. secured to the plate, a Vertical guide plate of anonmagnetic material secured to the lease,

and a magnet of Whichthe terminal portions Witnesses: extend throughrecesses in the guide plate L. J HALL, and the poles are flush with itsouter surface. G,-. J. FOSTER.

LEANDER A. KAHRS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

